/**
 * Created by minigci.he on 16/9/20.
 */
console.log('--------------------------')
console.log('test10')

var m = new Map();
m.set('edition', 6)
m.set(262, 'standard')
m.set(undefined, 'nah')

console.log(m);     // {"edition" => 6, 262 => "standard", undefined => "nah"}